Typewriting machine



July 7, 1925.

lla. c. s'rlcKNEY TYPEWRITING MACHINE Filed April 13, 1921 vibrationsfromy the machine to the base. The invention is shown as applied to an Unl Patented July 7, 17925.

'UNITEDPSTATES PATENT gOF'F-IC Efl BUBNHAM o. s'rioKNnY, vor ELizABETH,YNaW` JERSEY, AssIGNOR .'ro UNDERwoOD.

yTirrnwirifrnn COMPANY, `or NEW YORK, N. Y., A CORPORATION OFDELAWARE.

Y '.rYPEWRIiriNG MACHINE.-

' Appiiqationhfiied'Apriii3,192i. :seriai No. 460,954.

To all whom/itmagi-concern.'

Be itlrnown that I, BURNHAM G. Sfrioix-` NnY,a citizen of theUnited States, residing in' Elizabeth, in thecounty of Union and State of New Jersey, have invented certain new and useful Improvements in Typewritf ing lVlachines, of which the following is a specification. 4

This invention'relates to combined means for connecting a typewriter' to abaseV or sup-Y port and preventing transmission of sound derwood standard typewriter.

One feature of this'inv'en'tion is the pro"-y vision of simple andA efficientV mechanism whereby a vtypew-riter may be .supported and-l held rinly in position 'on abase or support, but which permits the machiney to be readily removed from vits base without detachin'g or operating any mechanism. Hitli-r erto it has been customary to provide typewriters with rubber or felt feet which' were screwed to the frame, and clamps were then' provided to hold the machine on its base or support. The clamps'had to be unscrewed or otherwise operated whenitrwas desired torelease themachine. The ypresent, invention provides a 'combinedsupporting v'and fastening or clamping means, which'requires" no operation of parts when'it is'desiredfto remove the machine rfrom its base.A

Another feature of this invention is the incorporation of Asound-deadening material in the fastening means, so that a 'minimum' amount of vibration is ,transmitted to the' base which ordinarily acts as a resonator'to amplify these vibrations and increase the noise of operation.

, assembling the parts.

Still another 'feature of this invention is the ease with which the fastening means may be applied to an ordinary typewriter and the simplicity of assembling and dis- Other features and inafter appear. Y

In the accompanying drawings,

Figure 1 is a frontview of an Underwood advantages will herestandard typewriter fixed to a base by the improved connecting means. n

Figure 2 is a plan View, partly sectioned, of the device in Figure 1, the machine being broken away near the base.

Figure 3 is an end view, partly sectioned, of the deviceshown in Figure 1.

The illustratedv typewriter comprises a main frame10 in which is supported most ofrv the operating mechanism, said frame'having a forward extension 11vinv which banksof keys 12'are positioned;'the frame being" usually mounted on a base or support 15.

The frame is supported at each side thereof by a set of the improved connecting devices,` each ofsa'id sets of devices' comprising ,two co-operating `members 16 and'17. The einem# ber 16 of each set'is lfixed to `the` frame vof the machine by vscrews, 18 fpassingthere-f through and Vup into. said frameyand is supported upon the cooperatingmember 1,7 vfastened to the base or support'fby screws^19k Each memberr 16 vcomprises fiat," horizon? tally disposed,'m'etal stripor 'plate 20 X'edtoa sidel ofthe frameV 1 0 bythe screws" y18,V said member' terminating in an' outer 'portion 21 rolled o r curved, in the form'of a tube toA impart rigidity'to the plate. Each member 17 V'similarly comprises a fla-t, generally horizontal, metal strip or'fplate 22 terminating" in a rolled portion 23 in the form of Eay tube,

concentric with tube 21, eaohriat *strip 22 having forward andrearwardextensions 24 Vthrough which pass screws 19 to hold mem-l ber 17 to the base. vIt will be apparentfthat by properlyipositioning members 17 `on the base, themachine'canfbe slid rearwardly, so :that meinbersfl telescope into members 17 ,itheunclosed portion 25 offroll'ed portion 23perm`tting strip 20of member'16 to slide therein.iv i i y `To facilitate inserting they inner 'tubesf' both tubes may beslightlyvtapered The ta-y l scribed, 4rthe frame is f held k'against sidewise movement, and vthe plates 29 prevent rearward movement. Since there is little or no forward movement of thel machine, the latter 'isheldfirmly in` position during operationl thereof. 'Y l l Since lmembers 16 kand 17 arepreferably of metal, 'the' contact 'of metal'with metal Would readilytransmit the vibrations which i'io arise during typing to the base which acts as a resonator to amplify the sound. Members 16 and 17 are therefore kept out of contact at all points by ai felt filler-member in the shape of a tube tting snugly on the interior of each tube 23. The diameter of the tube 21, which fits into tube 30, is therefore smaller than the diameter of tube 23 at any point along its length by twice the thickness of the felt composing memberv 30. The rear end of tube 21 is kept out of contact with plate 29 by a felt pad 31 xedto said plate. By the above-described arrangement of parts', the vibrations of the machine transmitted by members 16 are absorbed by the felt members 30 and 31 before they can reach members 17 and hence the base. There is a decided reduction in the sound of operation due to this absorption of vibration by eliminating the metal-to-metal connection.

From the above description, it will be apparent that the typewriter, through members 16, is supported upon members 17, the members 16 being completely insulated from -members 17 yby a layer of sound-deadening material, such as felt, and that the co-operating, telescoping, tubular portions members 16fand 17 vtogether with end plates 29 provide a clamping meansto hold the 'machine firmly in position during the typ-l ing operation. The machine need only be drawn forward to withdraw tubes 21 from tubes 30 and 23 in order to release the machine from its base 15. i

It will be understood from the foregoing that each of the sets of connecting devices at the opposite sides of the frame '10 'of the machine comprises a horizontal plate 20 secured to the frame 10, a second horizontal plate 22 lying upon and secured to the base 15, and a bed of insulating-material in the form of the felt member 30, interposed between the plates 20 and 22. This construction is very effective in preventing transmission of vibrationsvfrom the machine-frame 10 to the base 15. In order to lock the frame 10 of the machine against'vertical movement, the outer portion of the horizontal platev 22 is extended upwardly and inwardly 'about the outer portion of the-plate 20, soas to cause the outer portions of the plates 20 and 22 to be arranged in intergrippingv relation with each other. To the end that the plate 20 may be maderigid, its outer portion is preferably curved upwardly and inwardy as indicated at 21, and in such an event the outer portion 23 of the plate 22 is also preferably curved upwardly and inwardly coneentrically with the portion 21 ofthe plate 20. The outer portion of the bed of insulating material 30 is also extended upwardly and .inwardly between the outer portions of the plates 20 and 22 so as not only to completely insulate the plates 20 and 22 from each other, but also to prevent displacement of the horizontal portion of the felt member 30` relatively to the plates 2O and 22. y

In order to cause the frame 10 of the machine to be locked against lateral movement, the plates20 and22 of the set of connecting devices at one side of the machine are arranged reversely to the plates 20 and 22 at the opposite side of the machine; that is, as viewed in Figure 1 of the drawings, the outer portions of vthe `plates 2O and 22 at one side of the machine are curved inwardly toward the right, whereas such members at the opposite side of the machine are curved inwardly toward the left. ith this construction, the outer portion 23 of the plate 22 at one side of the machine prevents lateral movement of the machine in one direction, andthe outer portion 23 of the plate 22 at the opposite side of the machine prevents lateral movement of the machine in the opposite direction, vso that the devices on both sides of the machine co-act to positively lock the machine against lateral movement of any kind. As 'hereinbefore in dicated, the sets 'of connecting devices are preferably constructed so as to enable the machine to be connected to and Vdisconnected from the base by a simple sliding movement, and, to facilitate the connection of the machine to the base in such a manner, the tubular portions 21 and 23 of the plates 2O and 22, respectively, are tapered from end to end toward the rear of the machine.

By reference to Figures 2 and 3, it will be noted that the 'plates 20` and 22 and the bed of insulating material 30 are all extended from the front of the frame 10` to the :back of the frame. The plates 20 and 22 are consequently of suchl length as to enable them to support the machine without any substantial flexing movement so that a rigid support for the machine is provided. This construction also provides a large area of surface contact between each of the Vplates 20 and the corresponding felt member 30, so that when the machine has lbeen moved rearwardly to slide the tubular portions 21 of the plates 20l into the housings, provided by the felt members 30 and the tubular portions 23 of the plates 22, the machine will be held so rmly by friction between the parts of the connecting devices as to prevent it from being accidentally moved forward.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be usedwithout others.

Having thus described my invention, I claim:

1. In combination, a typewriting machine base (and `a typewriting machine locatedk thereon with sound Vdeadening means between the base and machine, Vsaid sound deadening means comprising a horizontally` the base and fastenedk on top of the same,

insulating material on-top of the horizontal part of the plate and around the interior of the enveloping portion and a member slid- Y ablev within the interior of the insulating material and 'attached to the typewriter whereby 'without distorting Said members or` insulating material, the typewriter maybe slid into and Vout of engagement with the base but held from either lateral movement rectangular to said sliding movement or vertical movement relative to the base.

ing turned over at one side, the other member having a secondy horizontal plate attached thereto, said second plate being alsoturned over at one side, an insulating piece on top of the rst mentioned horizontal plate and within the first mentioned turned over portion and surrounding the second mentioned turned over portion,- the construction being such that the typewriter is detachable from thev base without distortion oi` the sound deadening portion by asliding movement of the typewriter member parallel` tov the upper surface of the base, the enveloping turned over portion preventing vertical movement of the typewriter relative to the base Vor movementsrectangular to said sliding movement.A

3. In comb'nation, a typewriter member and a base member, one of said members having attached to it on either side ofthe typewriting member, a horizontal plate turned over at its outer portion, the other member having a horizontal plate attached one on either side of the typewriting member and exending into the turned over portions ot' saidV other plates, insulating Lmaterial extending under the bottom of the type-A writer member and over the top of each of the horizontal plates and around in between the turned over portions and above and below the inwardly extended plates whereby the typewriter-may be slid out 'of connection with the base member without distorting the sound deadening material but holding the typewriter from movement rectangular to said sliding movement or vertically in. dependent of the base.

4. In combination with a ktypewriting maplates being turned laterally and inwardly about the outer portion of the other plate so as to positively lock the machine and the plate carried thereby against movement relatively tothe other plateand the base,

and said bedV of sound-deadening materialbeing also extended laterallyz and vinwardly between said plates, so as to'completelyin- 2 sulate the plates from eachother.

5. In combination with a typewriting machine, means for supporting thev machine on L base and for preventing transmission'of vibrations'from the machine to the base such as would cause the base-to act as aresonator to augument the sound produced by the maf chine, said vsupporting means comprising reversely-arranged ysets or'l devices located on opposite sides lof the machine, each ofy said sets of devices includinga yplate extending outwardly :tr-om one side of the machine, a second plate secured to the base, and a bed of sound-deadening'material interposed between said plates, said first-mentioned plate being curved upwardly and inwardly at its `outer portion to cause it to be rigid, said second-mentioned plate being turned upwardly and inwardly about the outer portion ofthe tirst-mentionedgplate substan-v tially concentrically with said outer portion so as to positively lock the first-mentioned plate and the machine against movementi relatively to the second-mentioned plate and the base, and said bed of sound-deadening material beingal'so extended'upwardly and inwardly between said lplatesV so as to coinpletely insulate the plates vfrom' each other.

6. AIn combination ywith a typewriting machine, means for supporting the machine on a base and `for preventing transmission lof vibrations from the machine. to thev base' such as would Ycause'the baseto'act as 'aiv resonator to augment the sound produced by the machine, said supporting means comprising inversely-arranged sets of vdevices located on opposite sides of the machine,l each of said sets of devices including an inner plate projecting outwardly from one.

sideof the machine and extendingr substantially from vjfrontto back' of the machine, an outer plate secured to the base andof aV length substantially equal to that of thev inner plate, and a bed of sound-deadening material interposed between said plates and completely insulating them fronieach other, said inner plate being curved upwardly and inwardly at its outer edge to cause it to be rigid, said outer plate being turned upwardly and inwardly aboutthe outer portion of the inner plate substantially concentrically with said outer portion so as to positively lock the inner plate 'and the machine against movement relatively to the outer'plate and the base, and said curved portions of said plat-es being tapered fromv end to end toenable each of the inner plates to'be readily engaged with said bed and the outer plate by slidable movement of the machine and the inner plates relatively to the outer plates and the base.

7. In combination with a typewriting machine, means for positively lockingI the machine to a base and 'for preventing transmission of vibrations from the machine to the base such as would cause the base to act as a resonator to augment the sound produced by the machine, said lockingl means comprising a bed of insulatingY material and cooperating inter-gripping members extending substantiallyjfrom front to back of the machine and held out of Contact with each other by the insulating material, one of said members being fixed to the machine and the other being fixed to said base, said first member being slidable into said second member for positive locking` engagement therewith, said machine being movable rearwardly to slide said rst member into engagement with said second member lfor supporting; and-` fastening said Vmachine on said base, .and said machine beingr movable `forwardly to disengage said members and release said machine from saidbase.

8. 'In combination with a typewriting machine, means for' positively locking thel machineto a base against vertical, rearward and lateral movement and for preventing transmission of vibrations from the machine to the base such as would cause the base te act as a resonator to augment the sound produced by the machine, said locking means comprising a tubular bed of insulating' material and inner and outer, rigid, tubular members, one of which is secured to the machine and the other to the base, said tubular bed of insulating material being' contained within said outer tubular member and said inner member being' slidable into said tubular bed and said outer member out of contact with the outer member but intergripping with it, said machine being;- movable rearwardly to slide said inner member into locking relation with said outer member for supporting the machine and 'tastening it on said base, and said machine being movableforwardly to disengage said members and release said machine from said base.

9. In combination with a typewriting machine, means for positively locking the machine to a base and for preventing transmission ot vibrations from the machine to the base such as would causethe base to act as a resonator to augment the sound produced by the machine, said locking means comprising' a tubular bed or" insulating' material and inner and outer, rigid, tubular members of different 'sizes` one of said mem-` bers being fixed to the machine and the other to said base, said members being' held out of contact with each other by the insulating 'material b ut inter'gripping so as to retain the insulating' material against displacement relatively to the members and to positively lock the machine against movement relatively to the base. Y

10. n comb-ination with a typewriting machine, means for positively locking the machine to a base against vertical, rearward and lateral movement and for preventing transmissioirot vibrations from the machine to the base such as would cause the base to act as a resonator yto augment thev soundV produced by the `machine,lsaid locking means comprising; a tubular bed of insulating material and cri-operating', substantially concentric, tubula-r members of different sizes held out of contact with each other by the insulating material, the smaller ot' said members being fixed to said machine and the larger of said members being'r fixed to vsaid base, said smaller .member being,Y slidtransmission of vibrations from the ma chine to the base such as would cause the base to'act as: a resonator to augument the sound producedby the machine, said loclc ing means comprisingA reversely-arranged sets ot' devices located on opposite sides of the machine, each set o1a devices including a bed of .insulating material extending substantially from front to back of the machine and co-operating members having substantially concentric tubular portions, said bed of insulating material-also having a tubular portion and said members being held out of Contact with each other by the insulatingl material and being of substantially the same length as the bed of insulating material, the smaller of said members with respect to its tubular portion being Xed to said machine and the larger` of said members being lined to said base, said smaller mem-V ber being' slidable within said larger member into locking; relation therewith, said machine being,` movable readwardly to slide said smaller member into said larger member for supporting' the machine and fastening it on said base, and said machine being` movable forwardly to disengage said members and release said machine from said base.

l2. In combination with a typewriting machine, means for positively locking the machine to a base and for preventing transmission o vibrations from thev machine to the base such as would cause the base to act as a resonator to. augment the sound p-roduced by the machine, said locking means comprising cio-operating, substantially. concentric,'tubular members of different sizes, the smaller oi s-aidinembers being lined to said machine and the larger of said members being lined vto said base,`said smaller member being slidabile withinA said larger member into locking relation therewith, said machine being movable rearwardly to slidev said smaller member into saidlarger member for supporting the machine, and fastening it on said base, and said machine being movable forwardly to disengage said members and release said machine from said base, means on said larger member for closing the bore of said member at its rear end to limit the rearward movementAv of said smaller member therein, and sound-deadening material interposed between said mem-` bers and between said smaller member and the closing means on the larger member Jfor completely insulating said members from each other. f Q

13. In con'ibination with a typewriting machine, means for positively locking the machine to a base against vertical, rearward and lateral movement and orpreventing transmission of vibrations from the machine to the base such as would cause t-he base to act as a resonator to augment the sound ,produced by the machine, said locking means comprising sets of devices located on op-posite sides of the machine, each including a bed of insulating material and co-operating members having `tubular portions of diierent sizes, one of said members being fixed to said machine and the other of said members being iixed to said base, said members being adapted for relative sliding movement, said machine being movable rearwardly to cause the smaller tubular portion of one of said members to enter the larger tubular lportion of the other mem-v bei' for supporting the machine and fastening it on said base, the devices of the set on one side of the machine being reversely arranged with reference tothe devices on the other side of the machine so that the members on one side of the machine prevent lateral movement of the machine in one direction and the devices on the other side of the machine prevent lateral movement of the machine in the opposite direction, and said bed of insulating material having a tubular portion interposed between the tubularportionsvof said first two members and completelyinsulating said liist two members l'rom each other.

14. In a typewritingmachine, a frame and two horizontal tubular supporting and securing members connected to the base of the frame at its opposite sides, said inembers projecting laterally from the frame and extending from the front to the rear thereof, and being adapted to be telescoped within cooperating tubular clamps on a supporting base V'for securing the machine vto the supporting base, the supporting area of said members being so great that the meinbers and clamps will Vact as ypressure-distrib.- utors to venable the machine to be supported upon soft, yieldable sound-deadening material v,interposed between the members and the clamps without comipacting said material substantially, whereby the transmis sion of vibration from the machinel to the base, such as would cause thebase to act as a resonator to augument the sound pro-- duced by the machine, is prevented.

BURNHAM C. STICKNEY. Vitnesses: y

MARION R.' MCCAFFREY, JENNIE P. 'THoRNn 

